Xflow alternator fitting

[MusCat]

Replaced the alternator to a 1700 xflow at the weekend which has resulting in 2 queries:

 

Firstly, does anyone know what tension is the belt supposed to be set at?

 

Secondly, a squeal has developed a just over 3,000 rpm up to about 3,800 which was not there before. It is not belt slip, it sounds like an aerodynamic rather than mechanical noise, anyone got any ideas what might be wrong?

 

Thanks

 

Tim

 

[J A T Richardson]

I just do mine pretty damn tight - a lever down the side of the alternator to push it out, then tighten up. I have approx 1" play in the belt - and it ain't snapped yet, after 7 years and 30k miles

 

Stinky toy driver - and proud of it!

[Joe 90]

It's difficult to get enough tension into the belt. If you can move the belt up or down by about than an inch then it's about right.

 

SEP field working, not spotted in 103,300 miles. Some photos on webshots, updated 25 Jan

[Peter T]

When you fitted the new alternator, did you align it first ?

Did you check the pulleys are in line with the crank and water pump one's ?

Using a steel ruler is one way to check.

The noise you say sounds like the belt is resonating, caused buy pulleys out of line.

There is a movable dowel in the back lug of the alternator that allows fore and aft movement .

 

Carbon Components from K9 Composites

 

[Nigel Riches]

Is the pulley section the same as the original one? the "V" shape can be of differing dimensions, and use different sized belts, of course this won't apply if you used the original pulley on the new alternator.

 

1982. 5 speed, clamshells. B.R.G / Ali. The True Colours.